Speed-gearing.



No. 823,369. PATENTBD JUNE 12, 1906.

P. w. SGHROEDER.

SPEED GEARING.

APPLICATION FILED 001113. 1903.

WITNESSES INVENTOR 5W. M Q& l iwuwfim UNITED PATENT OFFICE.

Specification of Letters Patent.

X's-tented. June 12, 1906.

Application filed October 13, 1903. Serial No. 178.868-

7 all whom it may concern:

Be it known that I, FREDERICK WILLIAM Sonaosnnn, a subject of the King of Great Britain and Ireland, residing at 9 Arundel street, Strand, in the county of London, England, have invented certain new and useful Speed-Gearing, of which the following is a specification.

My invention is designed to rovide improved gearing by which the spec of a driven shaft can be varied in definite steps with a constant speed of the driving-shaft.

In the accompanying drawings, Figure 1 is a longitudinal section, partly in elevation, of a variable-speed gear constructed according to this invention. Fig. 2 is an elevationof the face of the driving-disk; and Figs. 3 and 4 are detail views, drawn to a larger scale, showin a construction of the rings of teeth in the drlving-disk.

A sleeve a, mounted loosely on a shaft a, is

arranged to be connected to the latter by means of a clutch b, sliding on a feather on the sleeve and operated in the usual manner by a forked lever b, engaging in an annulus on the boss of the clutch. On the other end of the sleeve 0, is a disk 0, also arranged to be slid on a feather on the sleeve by means of a forked lever c. This disk is provided with two or more rings d of bevel-teeth these rings being fitted, preferably, in sections in grooves on the face of the disk concentric with its axis and secured by passing shanks d which are formed with or fixed to the ringsegments, through holes in the disk and fastening them with nuts.

On a sleeve e, which slides on a feather on the shaft e, the axis of which intersects orthogonall the axis of the shaft (1, are removably-fixe conical-toothed wheels f, equal in number to the rim s of teeth on the disk and cut to ear with t ese each to each when on one an the same side of the disk center. An additional conical-toothed wheel f is mounted with the others and cut to gear with one of the rings of teeth on the disk, preferably the inner ring, when on the other side of the disk center for reverse drivin as shown in dotted lines in Fig. 1. The w eels ff are preferably formed with bosses which serve as distance-pieces when the wheels are strun together on a feather on the sleeve e an secured thereon between the collar e and the nut e on the sleeve. The boss of the conical wheelf is formed with a groove in which the lever g engages for the purpose of sliding the sleeve e, together with the wheels ff, into such positions that each wheel may engage with 1ts corresponding ring of teeth in t e disk. The 'wheels f and the rings of teeth (1 are so spaced t lat when any one of the wheels is in gear the others are out of gear.

The rings of teeth are referably, as already described, attached to t e disk in segments, and in Figs. 3 and 4 there is shown a convenient arrangement in which each se ent consists of two half-teeth h hand a s ank 7c for attachment to the disk. The outsides of these sections are formed with a very slight taper, so that when two sections are drawn up by their nuts k the contiguous surfaces are wedged tightly togpther.

Having thus descri ed the nature'of my said invention and the best means I know of carrying the same into practical effect, I claim- 1. A speed-gearing comprising a disk having a plurality of concentric rows of teeth, an endwlse-movable sleeve carrying the disk, a shaft at right angles to the axis of the disk, a sleeve arran ed to slide on said shaft, pinions secured on t e latter sleeve equal innumber to and adapted to en age with the rows of teeth on the disk, eac with each, an additional pinion on the pinion-sleeve adapted to engage with one of the rows of teeth on the opposite side of the disk-axis, said pinions being spaced to allow onl one of them to mesh with the teeth on the disk at one time, means for withdrawing the disk-teeth from engagement with the pinions, and means for shding the pinion-sleeve along its shaft; substantially as described.

2. A speed-gearing comprising a disk having a plurality of rows of teeth attached to the said disk in segments, concentric with its axis, an endwise-movable sleeve ca g the disk, a shaft at right angles to the axis of the disks, a sleeve arranged to slide on the shaft, pinions secured on the latter sleeve equal in number to and adapted to engage with the rows of teeth on the disk, each with each, an additional pinion on the said sleeve adapted to engage with one of the rows of teeth on the opposite side of the disk-axis, the said inions being spaced to allow only one of t em to mesh with the teeth on the disk at one time, means for withdrawing the teeth on the disk from engagement with the pinions, and means for slidin the pinion-sleeve along its shaft, substanti as described.

3. A speed-gearing comprising an endwisemovable disk having a pluralit of rows of sliding said disk and said pinion-sleeve; subteeth concentric with its axis an attached to stantially as described.

said disk in se ments each segment consist- In testimony whereof I have signed my ing of two hal -teeth anda shank, the juncname to this specification in the presence of 5 tgn}-facei1u 1)bs1aidl segments geifigftaperled, 'la two subscribing witnesses;

s at as' eseeveonsai s at,a uraity of pinions on said sleeve, each ada ited to FREDERICK WILLIAM SCHROEDER' engage one of the rows of disk-teeth, one of Witnesses:

said pinions being arranged to drive said J. MILLARD, I0 shaft in a reverse direction, and means for EDWARD GARDNER; 

